What is the difference between a mixture and a compound BBC Bitesize?
A compound contains two or more elements chemically joined together. A mixture contains two or more different substances that are not chemically joined together.
What is a compound in science BBC Bitesize?
A compound is a substance that contains atoms of two or more different elements, and these atoms are chemically joined together. For example, water is a compound of hydrogen and oxygen. Each of its molecules contains two hydrogen atoms and one oxygen atom. There are very many different compounds.
How are compounds separated BBC Bitesize?
An impure substance made from different elements or compounds mixed together that are not chemically joined. Mixtures can usually be separated by physical techniques such as filtering and distillation .
What is a mixture BBC Bitesize GCSE?
A mixture contains two or more different substances that are not chemically joined together. The different substances in a mixture can be elements and/or compounds.
What are mixtures in science?
A mixture is made when two or more substances are combined, but they are not combined chemically. General properties of a mixture: ● The components of a mixture can be easily separated. ● The components each keep their original properties. ● The proportion of the components is variable.
How are the substances in a mixture changed?
The substances in a mixture can be elements, or compounds, or both. Being part of a mixture does not change the chemical properties of the substances that are in it. Mixtures can be separated by physical processes. These processes do not involve chemical reactions, and no new substances are made.
How are particles of different substances mix together?
Diffusion is another way to make a mixture. Particles of different substances mix together during diffusion. This happens: Diffusion explains why the smell of cooking spreads through the house, and why a drop of paint spreads on its own through a jar of water. You can find out more about diffusion in this Physics study guide.
Which is the best description of a mixture?
Mixture 1 An impure substance made from different elements or compounds mixed together that are not chemically joined. 2 Mixtures can usually be separated by physical techniques such as filtering and distillation. 3 Air is a mixture that contains the elements nitrogen, oxygen and argon, and also the compound carbon dioxide. More
How is a mixture different from a compound?
There are important differences between the properties of a mixture and a compound. In this table, the column ‘Mixture’ refers to the gasses hydrogen and oxygen, and the column named ‘Compound’ refers to water.